I don't eat the greatest (something that my mom the retired medical clinic lab technician constantly hounds me about), but I have gotten much better about (food) portion control (I've had a tendency since I was young, to eat enough for two people). I also work out. No weights for me (especially since my left shoulder was severely dislocated in 1989 due to a car-pedestrian accident [I was the pedestrian] is not up to handling the stress of bench presses, etc.), but I do a fair amount of cardio work. I can't run anymore (I used to be a competition runner), due to my asthma getting the best of me (I've suffered from exercised induced asthma, since long before I was diagnosed as being asthmatic back in 2003, when a severe asthma attack almost put me in the hospital), and the fact that getting all sweaty from the kind of brutal workouts I used to do, can aggravate my tendency to have dermatitis outbreaks, but I still spend 4 days a week before I start my workday in the company exercise room, doing a terrain profile jog, on a elliptical machine. It's great for de-stressing, and (as my mom has told me, when I tell her my blood work numbers) helps to maintain things like my cholesterol, triglycerides, etc. at acceptable levels.
I only have time for 20 or 30 minutes on the elliptical machine (my job as a Quality Engineer, can be rather time consuming, with the result that more than occasionally I get out of work late, making additional exercise after work a No Go for me), but it's definitely been worth it for me. I also make a point of walking everywhere in the plant, instead of taking the adult/senior citizen style tricycle that is located in the QA department (I ignore my wimpy hypochondriac of a male coworker's comments about how it would be so much easier for me to get where I want to go, by using it), and use the stairs instead of the elevator. Both the walking, and the stair taking can be of a benefit to anybody health-wise, as a means of getting in additional exercise, without having to set aside additional time to do so.